Littlesister to get pickle smell out of a 5 gallon bucket use two to 4 cups of baking soda and hot water to the rim then let sit over night and dump if still smelly repeat.
Buy the baking soda from a chemical supplier or pool place not a grocery store for price of 5 boxed you can get 50 lb. If no use for it get it wet and let it harden with water changes it to washing soda which is base for laundry and tanning process.